Method of manufacturing a fluorescent display apparatus
US4382979A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1980 |
| Grant date | May 10, 1983 |
| Priority date | — |
| Expiry date | Oct 6, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J31/15
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of manufacturing a fluorescent display apparatus divided into a plurality of sections each having a plurality of anode conductors disposed on a base plate made of an insulating material, wherein phosphor layers are applied on the anode conductors in each of the sections using phosphors of different luminous colors to obtain a plurality of display sections for illuminating different luminous colors upon impingement of electrons, comprising the steps of forming a first phosphor paste comprising a phosphor compound capable of emitting a particular luminous color, a volatile solvent and a solid film forming element decomposable by the application of heat at a temperature higher than the volatilization temperature of the solvent; forming a second phosphor paste consisting of a phosphor compound capable of emitting a particular luminous color different from that of the first phosphor paste and a volatile solvent; screen printing the first paste to the anode conductors of at least one section of the display apparatus; nextly volatilizing the solvent of the first screen printed paste at a temperature above the volatilization temperature of the solvent and below the decomposition t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.